package com.itheima.service;

import com.alibaba.dubbo.config.annotation.Service;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.itheima.dao.PermissionDao;
import com.itheima.dao.RoleDao;
import com.itheima.dao.UserDao;
import com.itheima.entity.PageResult;
import com.itheima.entity.QueryPageBean;
import com.itheima.pojo.Menu;
import com.itheima.pojo.Permission;
import com.itheima.pojo.Role;
import com.itheima.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * 用户服务
 */
@Service(interfaceClass = UserService.class)
@Transactional
public class UserServiceImpl implements UserService{
    @Autowired
    private UserDao userDao;
    @Autowired
    private RoleDao roleDao;
    @Autowired
    private PermissionDao permissionDao;

    //根据用户名查询用户信息,包括用户的角色和角色关联的权限
    public User findByUsername(String username) {
        User user = userDao.findByUsername(username);//根据用户名查询用户表
        if (user == null) {
            return null;
        }
        Integer userId = user.getId();
        //根据用户id查询关联的角色
        Set<Role> roles = roleDao.findByUserId(userId);
        if (roles != null && roles.size() > 0) {
            //遍历角色集合，查询每个角色关联的权限
            for (Role role : roles) {
                Integer roleId = role.getId();//角色id
                //根据角色id查询关联的权限
                Set<Permission> permissions = permissionDao.findByRoleId(roleId);
                if (permissions != null && permissions.size() > 0) {
                    //角色关联权限集合
                    role.setPermissions(permissions);
                }
            }
            //用户关联角色集合
            user.setRoles(roles);
        }

        return user;
    }

    @Override
    public List<User> findAll() {
        return userDao.findAll();
    }

    @Override
    public List<User> findByUserId(int id) {
        return userDao.findByUserId(id);
    }

    @Override
    public void update(User user, int[] roleids) {
        userDao.update(user);
        Integer userId = user.getId();

        setUserAndRole(userId, roleids);
    }

    @Override
    public void add(User user, int[] roleids) {

        userDao.add(user);
        Integer userId = user.getId();
        setUserAndRole(userId, roleids);
    }

    @Override
    public void delete(int id) {
        userDao.delete(id);
        userDao.deleteUserAndRole(id);
    }

    @Override
    public PageResult findPage(QueryPageBean queryPageBean) {
        Integer currentPage = queryPageBean.getCurrentPage();
        Integer pageSize = queryPageBean.getPageSize();
        String queryString = queryPageBean.getQueryString();
        PageHelper.startPage(currentPage,pageSize);
        Page<Menu> page=userDao.findByCondition(queryString);
        return new PageResult(page.getTotal(),page.getResult());
    }

    public void setUserAndRole(int userid, int[] roleids) {
        if (roleids.length > 0 && roleids != null) {
            for (int roleid : roleids) {
                Map map = new HashMap();
                map.put("userid", userid);
                map.put("roleid", roleid);
                userDao.setUserAndRole(map);
            }
        }
    }

}
